Rename vndk apex according to vndk version

VNDK APEX should be named after the version of VNDK libs.
For example, if vndk_version is 29, then the apex name should be
com.android.vndk.v29. If vndk_version is not set or is 'current', then
the platform vndk version is implied.

This is done with setting "apex_name" with proper name.

Bug: 139774701
Test: m (soong test added)
Change-Id: I918252f12ccd351886030fe9139a020d6cf1ff32

apex/apex.go

@@ -222,12 +222,14 @@ func apexVndkGatherMutator(mctx android.TopDownMutatorContext) {
 		if ab.IsNativeBridgeSupported() {
 			mctx.PropertyErrorf("native_bridge_supported", "%q doesn't support native bridge binary.", mctx.ModuleType())
 		}
-		vndkVersion := proptools.StringDefault(ab.vndkProperties.Vndk_version, mctx.DeviceConfig().PlatformVndkVersion())
+
+		vndkVersion := proptools.String(ab.vndkProperties.Vndk_version)
+
 		vndkApexListMutex.Lock()
 		defer vndkApexListMutex.Unlock()
 		vndkApexList := vndkApexList(mctx.Config())
 		if other, ok := vndkApexList[vndkVersion]; ok {
-			mctx.PropertyErrorf("vndk_version", "%v is already defined in %q", vndkVersion, other.Name())
+			mctx.PropertyErrorf("vndk_version", "%v is already defined in %q", vndkVersion, other.BaseModuleName())
 		}
 		vndkApexList[vndkVersion] = ab
 	}
@@ -1791,6 +1793,15 @@ func vndkApexBundleFactory() android.Module {
 		}{
 			proptools.StringPtr("both"),
 		})
+
+		vndkVersion := proptools.StringDefault(bundle.vndkProperties.Vndk_version, "current")
+		if vndkVersion == "current" {
+			vndkVersion = ctx.DeviceConfig().PlatformVndkVersion()
+			bundle.vndkProperties.Vndk_version = proptools.StringPtr(vndkVersion)
+		}
+
+		// Ensure VNDK APEX mount point is formatted as com.android.vndk.v###
+		bundle.properties.Apex_name = proptools.StringPtr("com.android.vndk.v" + vndkVersion)
 	})
 	return bundle
 }

apex/apex_test.go

@@ -1441,6 +1441,37 @@ func TestVndkApexErrorWithDuplicateVersion(t *testing.T) {
 	}))
 }
 
+func TestVndkApexNameRule(t *testing.T) {
+	ctx, _ := testApex(t, `
+		apex_vndk {
+			name: "myapex",
+			key: "myapex.key",
+			file_contexts: "myapex",
+		}
+		apex_vndk {
+			name: "myapex_v28",
+			key: "myapex.key",
+			file_contexts: "myapex",
+			vndk_version: "28",
+		}
+		apex_key {
+			name: "myapex.key",
+			public_key: "testkey.avbpubkey",
+			private_key: "testkey.pem",
+		}`)
+
+	assertApexName := func(expected, moduleName string) {
+		bundle := ctx.ModuleForTests(moduleName, "android_common_"+moduleName).Module().(*apexBundle)
+		actual := proptools.String(bundle.properties.Apex_name)
+		if !reflect.DeepEqual(actual, expected) {
+			t.Errorf("Got '%v', expected '%v'", actual, expected)
+		}
+	}
+
+	assertApexName("com.android.vndk.vVER", "myapex")
+	assertApexName("com.android.vndk.v28", "myapex_v28")
+}
+
 func TestVndkApexSkipsNativeBridgeSupportedModules(t *testing.T) {
 	ctx, _ := testApex(t, `
 		apex_vndk {